Publication: Half-cell and noise voltages at a metal-electrode and dilute solution interface
Дата
2022
Авторы
Barbero, G.
Evangelista, L. R.
Merletti, R.
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Аннотация
The detection of bioelectric signals is usually based on an electrode-skin contact that is often mediated by a layer of conductive gel. This interface produces a DC voltage (half-cell potential) and a random noise voltage whose relationship is not well known. The first may cause amplifier saturation and the second posits a limit to the detection of small signals. This work investigates the mechanisms of generation of these two voltages in the simpler case of a metal-electrolyte junction and finds a theoretical expression for both, under a few simplifying hypotheses. An expression is found that relates the two voltages to the ionic concentration and to the parameters defining the dynamics of the adsorption-desorption phenomena taking place at the interface. A relationship is found between the two voltages that is in qualitative agreement with experimental findings reported in the literature. This theoretical background provides a basis for further investigation of the metal-gel and of the gel-skin interfaces not addressed in this work. © 2022 IOP Publishing Ltd and SISSA Medialab srl
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Цитирование
Barbero, G. Half-cell and noise voltages at a metal-electrode and dilute solution interface / Barbero, G., Evangelista, L.R., Merletti, R. // Journal of Statistical Mechanics: Theory and Experiment. - 2022. - 2022. - № 8. - 10.1088/1742-5468/ac827e
URI
https://www.doi.org/10.1088/1742-5468/ac827e
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https://openrepository.mephi.ru/handle/123456789/27290
https://www.scopus.com/record/display.uri?eid=2-s2.0-85135995651&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000838313800001
https://openrepository.mephi.ru/handle/123456789/27290